MILLION DOLLAR PRICE REDUCTION! QUALIFIED BUYERS WELCOME! "Fine Homes & Lifestyles" cover feature! Architecturally distinguished property. Custom built estate, luxury of modern-day amenities combined with imported, antique, historic, thoughtfully resourced building materials & detail bring centuries old world charm to this extraordinary 10-acre Potomac Tuscany inspired Villa. Minutes to Washington DC. 8 to 12 ensuite bedrooms, libraries, offices, spacious gathering & lecture areas. Land your helicopter-security & privacy; entertain large gatherings-wedding venues, stone chapel replica of ancient Italian estate w/ Della Robbia inspired bell; entertain fine arts displays or performances; host concert pianist recitals; house guests who travel from abroad to attend your venue - closest to downtown Washington DC, convenient location to northern Virginia and Baltimore; minutes to golf courses hosting major tournaments; Airbnb or bed & breakfast hosts' dream property, great place for a spa, relaxing Turkish baths; NIH, medical institution or University satellite location for gatherings to further education, enrichment, group meetings & presentations, international conferences; embassy or consulate ownership, consular offices, ambassadorial residences, government embassy, serene, gated, security & privacy convenient location close proximity to DC; high-level relocation for foreign service officers; relocation consultants, international organizations & consulates; tranquil, inspiring haven to host retreats or ceremonial gatherings; bring your horses; fish-carp filled pond; grow grapes, vineyard potential; artist's inspirational getaway w/studio to display creations; serenity ,writer's escape from hustle & bustle of city ; swim laps year round "against the current" indoor pool (specially designed HVAC system to reduce humidity) enjoy a game of pool volleyball w/ friends; cook in the true gourmet kitchen boasting a spectacular Lacanche stove imported from France; gracious home family, friends & guests can enjoy. Grand property, designed & built w/integrity & genuine craftmanship. Resources, research, history, the study of light and more combined to recreate the appearance of centuries old, Medieval, European influenced architecture and culture & modern comforts for prestigious living, welcome to "Albero del Segnale" Driveway built of centuries old, repurposed cobblestones, came to this country from Europe as ballasts on sailing ships and were then used to pave city streets. Pass through the iron gates, the double stone entrance pillars capped with custom made lanterns from Italy and along the driveway lined with antique streetlamps. Greeted by the front landing made of hand-hewn antique limestone pavers from Italy and twin Corinthian limestone columns also custom made in Italy. Front doors, supported by gold-plated, hand-chiseled hinges custom made in France, spectacular classic Italian design featuring iron grillwork in the glass transoms and a working "man door," door within a door - tradition dates to Medieval times. Grand foyer drenched with natural light from 2+ story windows, welcomed many renown performers and pianists, fantastic acoustics! Every room in this grand, glorious mansion is abundant with natural light, every angle of each room has magnificent windows connecting pastural rolling views with interior. Centuries-old hand-molded antique terra cotta floors w/imprints of the artisan's fingers & hands as well as occasional animal footprints are forever defined - imprinted before the tiles dried and were fired. Solid iron balusters & railings designed for this home &hand forged in Italy & so much more! No HOA offers many potential uses
For sale
Price cut: $955K (5/14)
$8,995,000
13320 Signal Tree Ln, Rockville, MD 20854
8beds
26,716sqft
Single Family Residence
Built in 2007
9.94 Acres Lot
$7,990,100 Zestimate®
$337/sqft
$-- HOA
What's special
Fish-carp filled pondHand-hewn antique limestone paversCorinthian limestone columnsCenturies old repurposed cobblestonesAntique streetlampsGrand foyerIron gates
- 180 days |
- 2,246 |
- 117 |
Zillow last checked:
Listing updated:
Listed by:
Susan Hartman 410-608-4299,
O'Conor, Mooney & Fitzgerald (410) 321-8800
Source: Bright MLS,MLS#: MDMC2212744
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Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 8
- Bathrooms: 15
- Full bathrooms: 10
- 1/2 bathrooms: 5
- Main level bathrooms: 7
- Main level bedrooms: 1
Basement
- Area: 10622
Heating
- Other, Zoned, Electric, Propane
Cooling
- Central Air, Other, Zoned, Ceiling Fan(s), Heat Pump, Electric
Appliances
- Included: Microwave, Built-In Range, Down Draft, Cooktop, Dishwasher, Disposal, Dryer, Extra Refrigerator/Freezer, Range Hood, Refrigerator, Washer, Washer/Dryer Stacked, Water Heater, Instant Hot Water
- Laundry: Lower Level, Main Level, Upper Level
Features
- 2nd Kitchen, Additional Stairway, Bar, Soaking Tub, Bathroom - Walk-In Shower, Breakfast Area, Built-in Features, Dining Area, Elevator, Entry Level Bedroom, Exposed Beams, Family Room Off Kitchen, Open Floorplan, Formal/Separate Dining Room, Kitchen - Country, Eat-in Kitchen, Kitchen - Gourmet, Kitchen Island, Pantry, Primary Bath(s), Store/Office, Upgraded Countertops, Walk-In Closet(s), Other, 2 Story Ceilings, 9'+ Ceilings, Beamed Ceilings, Cathedral Ceiling(s), Dry Wall, High Ceilings, Block Walls, Vaulted Ceiling(s)
- Flooring: Concrete, Hardwood, Slate, Stone, Other, Wood
- Doors: French Doors, Sliding Glass, Double Entry
- Windows: Skylight(s), Stain/Lead Glass, Window Treatments
- Basement: Full,Finished,Heated,Improved,Interior Entry,Exterior Entry,Windows
- Number of fireplaces: 7
- Fireplace features: Mantel(s), Wood Burning, Other, Marble, Stone, Wood Burning Stove
Interior area
- Total structure area: 30,445
- Total interior livable area: 26,716 sqft
- Finished area above ground: 19,823
- Finished area below ground: 6,893
Video & virtual tour
Property
Parking
- Total spaces: 105
- Parking features: Storage, Garage Faces Side, Garage Door Opener, Inside Entrance, Oversized, Other, Paved, Private, Driveway, Circular Driveway, Crushed Stone, Lighted, Secured, Attached
- Attached garage spaces: 5
- Uncovered spaces: 100
Accessibility
- Accessibility features: Accessible Hallway(s), Doors - Swing In, Accessible Entrance, Other, Accessible Elevator Installed, Accessible Approach with Ramp, 2+ Access Exits, Accessible Doors
Features
- Levels: Three
- Stories: 3
- Patio & porch: Patio, Porch, Roof, Screened, Terrace, Breezeway, Brick, Deck, Enclosed
- Exterior features: Extensive Hardscape, Lighting, Flood Lights, Stone Retaining Walls, Other, Bump-outs, Play Area, Balcony
- Has private pool: Yes
- Pool features: In Ground, Indoor, Lap, Other, Heated, Filtered, Private
- Has spa: Yes
- Spa features: Bath
- Fencing: Other
- Has view: Yes
- View description: Garden, Panoramic, Pasture, Pond, Scenic Vista, Other, Courtyard
- Has water view: Yes
- Water view: Pond
Lot
- Size: 9.94 Acres
- Features: Open Lot, Premium, Private, Rear Yard, Secluded, Other, Fishing Available, Front Yard, Hunting Available, No Thru Street, Wooded, Pond, SideYard(s)
Details
- Additional structures: Above Grade, Below Grade, Outbuilding
- Parcel number: 160603278022
- Zoning: OTHER
- Special conditions: Standard
- Horses can be raised: Yes
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Villa
- Property subtype: Single Family Residence
Materials
- Rock, Stone, Brick, Stucco, Masonry
- Foundation: Other
- Roof: Tile,Pitched,Other,Concrete
Condition
- Excellent
- New construction: No
- Year built: 2007
Utilities & green energy
- Electric: Generator
- Sewer: Septic Exists
- Water: Well
- Utilities for property: Other, Propane
Community & HOA
Community
- Security: Exterior Cameras, Monitored, Security System, Smoke Detector(s), Carbon Monoxide Detector(s), Fire Alarm, Fire Sprinkler System
- Subdivision: River Plantation
HOA
- Has HOA: No
- Amenities included: Other
- Services included: None
Location
- Region: Rockville
Financial & listing details
- Price per square foot: $337/sqft
- Tax assessed value: $9,825,900
- Annual tax amount: $113,252
- Date on market: 1/7/2026
- Listing agreement: Exclusive Right To Sell
- Ownership: Fee Simple
- Road surface type: Paved
Estimated market value
$7,990,100
$7.51M - $8.47M
$3,619/mo
Price history
| Date | Event | Price |
|---|---|---|
| 5/14/2026 | Price change | $8,995,000-9.6%$337/sqft |
Source:  Bright MLS #MDMC2212744 Report a problem | ||
| 1/7/2026 | Listed for sale | $9,950,000$372/sqft |
Source: Bright MLS #MDMC2212744 Report a problem | ||
| 10/6/2025 | Listing removed | $9,950,000$372/sqft |
Source: Bright MLS #MDMC2181626 Report a problem | ||
| 10/1/2025 | Listed for sale | $9,950,000$372/sqft |
Source: Bright MLS #MDMC2181626 Report a problem | ||
| 8/28/2025 | Listing removed | $9,950,000$372/sqft |
Source: Bright MLS #MDMC2181626 Report a problem | ||
| 6/1/2025 | Listed for sale | $9,950,000$372/sqft |
Source: Bright MLS #MDMC2181626 Report a problem | ||
| 4/30/2025 | Listing removed | $9,950,000$372/sqft |
Source:  Long & Foster Broker Feed #MDMC2151600 Report a problem | ||
| 3/17/2025 | Price change | $9,950,000-9.5%$372/sqft |
Source: Bright MLS #MDMC2151600 Report a problem | ||
| 11/4/2024 | Listed for sale | $10,995,000-2.4%$412/sqft |
Source: Long & Foster Broker Feed #MDMC2151600 Report a problem | ||
| 8/14/2024 | Listing removed | $11,260,000$421/sqft |
Source: Bright MLS #MDMC756732 Report a problem | ||
| 5/17/2024 | Price change | $11,260,000+0.1%$421/sqft |
Source: Bright MLS #MDMC756732 Report a problem | ||
| 4/26/2024 | Price change | $11,250,000-2.2%$421/sqft |
Source: Bright MLS #MDMC756732 Report a problem | ||
| 5/29/2022 | Price change | $11,500,000-9.8%$430/sqft |
Source: Bright MLS #MDMC756732 Report a problem | ||
| 6/14/2021 | Listed for sale | $12,750,000-20.3%$477/sqft |
Source: Bright MLS #MDMC756732 Report a problem | ||
| 11/18/2018 | Listing removed | $16,000,000$599/sqft |
Source: Long & Foster Real Estate, Inc. #MDMC100134 Report a problem | ||
| 11/14/2018 | Listed for sale | $16,000,000+1541%$599/sqft |
Source: Long & Foster Real Estate, Inc. #MDMC100134 Report a problem | ||
| 1/31/2002 | Sold | $975,000+69.6%$36/sqft |
Source: Public Record Report a problem | ||
| 12/29/2000 | Sold | $575,000$22/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $113,252 -13.9% | $9,825,900 -14% |
| 2024 | $131,602 +4.7% | $11,431,700 +4.8% |
| 2023 | $125,645 +9.7% | $10,904,800 +5.1% |
| 2022 | $114,520 +5.4% | $10,377,900 +5.3% |
| 2021 | $108,607 -0.1% | $9,851,000 |
| 2020 | $108,676 -0.1% | $9,851,000 -0.2% |
| 2019 | $108,822 -0.2% | $9,868,700 |
| 2018 | $109,020 -1.3% | $9,868,700 +0.5% |
| 2017 | $110,497 +55.2% | $9,817,533 +0.5% |
| 2016 | $71,195 | $9,766,367 +0.5% |
| 2015 | $71,195 | $9,715,200 +11.6% |
| 2014 | $71,195 | $8,705,333 +13.1% |
| 2013 | -- | $7,695,467 +15.1% |
| 2012 | -- | $6,685,600 |
| 2011 | -- | $6,685,600 |
| 2010 | -- | $6,685,600 -11.1% |
| 2009 | -- | $7,522,360 +4.2% |
| 2008 | -- | $7,217,722 +970% |
| 2007 | -- | $674,560 -30.8% |
| 2006 | -- | $975,000 +31.2% |
| 2005 | -- | $743,132 +119.1% |
| 2004 | -- | $339,200 +21.4% |
| 2003 | -- | $279,400 +5% |
| 2002 | -- | $266,116 |
| 2001 | -- | $266,116 |
Find assessor info on the county website
Monthly payment
Est. payment$--/mo
Payment breakdown
Explore the cost of this home by adjusting the details. Changes won't be saved.All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
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Climate risks
Neighborhood: 20854
Nearby schools
GreatSchools rating
- 7/10Darnestown Elementary SchoolGrades: K-5Distance: 2.4 mi
- 6/10Lakelands Park Middle SchoolGrades: 6-8Distance: 5.1 mi
- 7/10Northwest High SchoolGrades: 9-12Distance: 5.4 mi
Schools provided by the listing agent
- District: Montgomery County Public Schools
Source: Bright MLS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
A local agent can set up tours, give advice and negotiate with sellers.
- Maryland
- Montgomery County
- Darnestown
- 20854
- 13320 Signal Tree Ln
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